Excitation spectrum of vortex lattices in rotating Bose-Einstein condensates

被引:19
作者
Choi, S [1 ]
Baksmaty, LO [1 ]
Woo, SJ [1 ]
Bigelow, NP [1 ]
机构
[1] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
来源
PHYSICAL REVIEW A | 2003年 / 68卷 / 03期
关键词
D O I
10.1103/PhysRevA.68.031605
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Using the coarse-grain averaged hydrodynamic approach, we calculate the excitation spectrum of vortex lattices sustained in rotating Bose-Einstein condensates. The spectrum gives the frequencies of the common-mode longitudinal waves in the hydrodynamic regime, including those of the higher-order compressional modes. Reasonable agreement with the measurements taken in a recent experiment is found, suggesting that one of the longitudinal modes reported in the experiment is likely to be the n=2,m=0 mode.
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页数:4
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